Improvement in tuyeres for blast-furnaces



W. M. vEVER-1T1; 4 TWYER FOR BLAST FURNACES No. 43,764. Patented Aug. 9,1864.

UNITED STATES PATENT ()FFICE.

WILLIAM M. EVERITT, OF MALDEN, NEW YORK.

IMPROVEMENT lN Tl JYERES FOR BLAST-FURNACES.

Specification forming part of Letters Patent No. 43,764, dated Augu911564 February 4, 1864.

panying drawings, and to the letters of reference marked thereon,forming part of this specification.

My improvement consists, first, in the removable bottom, by which meansthe cinders that accumulate in the tuyere can be easily removed, second,in the adjustable slide or damper andset-serew, in combination with theflat top plate and upper portion of the tuyere, by which means the blastis regulated,

as shown in the accompanying drawings.

In the drawings, Figure 1 1s a top view of said tuyere. Fig. 2isavertical section through 3 3 Fig. 3 is a vertical section through ww. A in Fig. 1 is the flat top plate or cover of the tuyere, upon whichthe fuel is placed. B is a circular aperture through the said top platenear its center, for the-purpose of admitting the blast to the fuel.

O is the adjustable slide, as shown in Fig.

" 2, and is made to slide against the under side of the top plate,directly under the aperture 13. The said slide serves as a pan to holdthe fuel, and also prevents the fuel from falling from the top platethrough the aperture into.

the tuyere below. The slide (J also regulates the blast by means of a.setserew,'J,, which" passes through the projecting arm E, near itsouter end, the lower end of the set-screw resting'upon the upper side ofthe arm l), whieh extends out from the slide (3, thus forming a handlewithwhich to adjust the slide.

1 is the cylindrical portion of the tuyere, upon which the top plate,A,'rests, The top plate, A, is secured to the upper portion of thetuyere by means of bolts H, which pass through to said top plate, thencethrough ears I,' which project out from the cylindrical portion of thetuyere and secured by means of nuts screwed onto the bolt below theprojecting ears I.

K is a grooved projection, extending out from the upper portion of thetuyere, for the support of the adjustable slide (3. The said groove isdeep enough to let the arm D rest upon it and at the'same time allow theupper side of the arm to come a trifle below the top of the cylindricalportion of the tuyere. The said adjustable slide is kept in its properposition by means of this mortised projection and also by means ot'pieces L L on two opposite sides of the aperture on the under side ofthe top plate, which prevents the slide from moving laterally.

M is a piece projecting down from the end of the arm E. The saidprojcction'has an aperture'or mortise sutiiciently large to allow thearm D to pass through it and also to have a little pl iy up and down, sothat it may not interfere with the regulating of the blast by means ofthe set-screw J. The adjustabe slide 0 is not-so thickas the arm D, thusallowing the upper side of said arm to fit against the under side of theflat top justback of the slide, and at the same time the slide is alittle distance below the said plate, thus allowing suflicient blast formost purposes. When more blast is required,the set-screw is raised,

thus allowing the outer end of the arm to rise, I

by which means the slide or pan. is lowered from the aperture, thusgiving the required draft.

0 is the conical portion of the tuye1e,to which the removable bottomBis'eonneeted at the bottom by means of beveled-pieces S S on twoopposite sides of the lower portion of the saidtuyere.

'R is the removable-bottom plate, made tapering, also the two oppositeedges beveled to fit the two beveled pieces S S. The said removablebottom is forIthepurpose of being removed for the discharge of thecinders which accumulate in the tu'yere.

T is a tube for the purpose of admitting the blast to the .tuyere andthence to the .fuel, the whole arrangementpmaking a very sim.

pic and at the same time a very convenient 2. In the combination andarrangement of tuyere for blast-furnaces.

the adjustable slide 0 with the arm I), and

Having thus fully described my invention, the arm E, and the set-screwJ, substantially v what I claim, and desire to secure by Letters as andfor the purpose set forth.

Patent of the United States is-- r r\ 1. The combination and ariangementof the ERI removable bottom It with the conical portion Witnesses:

' of the tuyere O and the beveled pieces S S, J. H. VAN KEUREN, vsubstantially as and for the purposes set forth. l THOMAS EVERITT.

